CN111442368B - Ceiling air conditioner indoor unit - Google Patents
Ceiling air conditioner indoor unit Download PDFInfo
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- CN111442368B CN111442368B CN201910045440.1A CN201910045440A CN111442368B CN 111442368 B CN111442368 B CN 111442368B CN 201910045440 A CN201910045440 A CN 201910045440A CN 111442368 B CN111442368 B CN 111442368B
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- air
- air duct
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- outlet
- indoor unit
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
- F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0067—Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
- F24F13/1413—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre using more than one tilting member, e.g. with several pivoting blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
Abstract
本发明提供了一种吊顶式空调室内机，其包括壳体，具有至少一个进风口和至少一个出风口，出风口位于壳体侧面；换热器，设置在壳体内；风扇，设置壳体内，用于经进风口吸入室内空气，使其与换热器热交换后形成热交换风，并将热交换风经出风口吹回室内；和风道部件，设置在壳体内，其设置有与至少一个出风口一一对应的至少一个风道，用于将热交换风引导至每个出风口处；且每个风道内设置有多个沿上下方向排列的导流板，以用于上下分隔风道内部空间。
The present invention provides a ceiling-mounted air-conditioning indoor unit, which comprises a shell having at least one air inlet and at least one air outlet, wherein the air outlet is located at a side of the shell; a heat exchanger arranged in the shell; a fan arranged in the shell and used to inhale indoor air through the air inlet, form heat exchange wind after heat exchange with the heat exchanger, and blow the heat exchange wind back into the room through the air outlet; and an air duct component arranged in the shell and provided with at least one air duct corresponding to at least one air outlet one by one, so as to guide the heat exchange wind to each air outlet; and each air duct is provided with a plurality of guide plates arranged in an up-down direction so as to divide the internal space of the air duct into upper and lower parts.
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to a ceiling type air conditioner indoor unit.
Background
Most of the existing household air conditioner indoor units are of wall-mounted type and floor-mounted type, and although the structures of the air conditioner indoor units are improved by merchants, the products are difficult to change essentially, and the diversified demands of users cannot be met.
In addition, the existing indoor unit of the air conditioner basically adopts a through-flow fan, the air outlet direction is right in front, and the air outlet direction is left and right for guiding the air, and the swing blades are up and down for guiding the air, but the air outlet direction is limited by a volute structure, the left and right air supply angle is usually smaller than 80 degrees, and the up and down air supply angle is usually smaller than 100 degrees. It can be seen that the existing indoor unit has fewer air supply directions and very limited air supply range.
In addition, the current through-flow fan mainly comprises forward blades, and the blades periodically impact the passing airflow to generate obvious rotating noise. The volute is matched with the fan to realize the air supply effect, and the front volute tongue and the rear volute tongue can also impact air flow to generate strong turbulence noise. The noise quality is difficult to be obviously improved in the prior art.
Disclosure of Invention
The invention aims to at least solve one of the defects in the prior art and provide a ceiling type air conditioner indoor unit so as to meet the diversified requirements of users on the air conditioner indoor unit.
The invention also aims to stabilize and boost the air flow of the air outlet of the suspended air conditioner indoor unit, reduce vortex loss, enable the air outlet to be smoother, reduce wind resistance and increase the air supply distance.
It is a further object of the present invention to reduce supply noise and improve noise quality.
In particular, the present invention provides a ceiling type air conditioner indoor unit, comprising:
The shell is provided with at least one air inlet and at least one air outlet, and the air outlet is positioned on the side surface of the shell;
the heat exchanger is arranged in the shell;
a fan arranged in the housing for sucking indoor air through the air inlet to form heat exchange air after heat exchange with the heat exchanger and blowing the heat exchange air back into the room through the air outlet, and
An air duct part arranged in the housing and provided with at least one air duct corresponding to the at least one air outlet for guiding the heat exchange air to each air outlet
Each air duct is internally provided with a guide plate or a plurality of guide plates which are arranged along the up-down direction and are used for separating the inner space of the air duct up and down.
Optionally, the wind channel is divided into an inlet section and an outlet section along the flow direction of the heat exchange wind, and the flow cross section of the wind channel in the inlet section is tapered along the flow direction of the heat exchange wind, and the flow cross section of the wind channel in the outlet section is kept unchanged along the flow direction of the heat exchange wind.
Optionally, the number of the guide plates is two, and an airflow channel which is gradually reduced along the flow direction of the heat exchange air is respectively defined between the guide plate at the upper side of the two guide plates and the top wall of the air channel, between the two guide plates and between the guide plate at the lower side and the bottom wall of the air channel.
Optionally, from an inlet to an outlet of the air duct, the top wall of the air duct sequentially comprises a plurality of sections which are tangentially connected, each section extends towards the outlet of the air duct and gradually inclines downwards, and the sections comprise a first arc-shaped section, wherein the center of the circle of the first arc-shaped section is positioned at the inner side of the air duct; the center of the second arc section is positioned at the inner side of the air duct, and the diameter is larger than that of the first arc-shaped section; and has a diameter greater than a first arcuate segment.
The bottom wall of the air duct sequentially comprises a plurality of sections which are connected in a tangent manner from an inlet to an outlet of the air duct, wherein the sections are respectively a third straight line section horizontally extending from the inlet to the outlet of the air duct, a fourth arc section with a circle center positioned at the inner side of the air duct and gradually extending upwards from the tail end of the third straight line section, a fourth straight line section upwards extending from the top end of the fourth arc section, a fifth arc section with a circle center positioned at the outer side of the air duct and having a diameter smaller than that of the fifth arc section and upwards extending from the top end of the fifth arc section, a seventh arc section with a circle center positioned at the outer side of the air duct and having a diameter smaller than that of the sixth arc section and gradually extending upwards from the top end of the sixth arc section and then extending downwards from the tail end of the seventh arc section towards the outlet of the air duct.
Optionally, the upper deflector is opposite to the third arc section of the top wall of the air duct and is in a curved shape gradually inclined downwards and with the convex surface facing downwards while extending towards the outlet of the air duct, and the lower deflector is opposite to the seventh arc section of the bottom wall of the air duct and is in a curved shape gradually inclined downwards and with the convex surface facing upwards while extending towards the outlet of the air duct.
Optionally, an included angle between a tangent line of an end part of the upper guide plate far away from the air channel outlet and the horizontal plane is 30-60 degrees, an included angle between a tangent line of an end part of the lower guide plate near the air channel outlet and the horizontal plane is less than or equal to 20 degrees, and an included angle between a tangent line of an end part of the lower guide plate far away from the air channel outlet and the horizontal plane is 0 degrees, and an included angle between a tangent line of an end part near the air channel outlet and the horizontal plane is less than or equal to 20 degrees.
The fan is a laminar flow fan, the rotation axis of the fan extends vertically, air is sucked from the axial bottom of the fan during operation, and laminar flow wind is generated by utilizing the viscous effect of the air and is blown out radially outwards.
Alternatively, the heat exchanger is in a ring plate shape or a half ring plate shape with an axis extending in a vertical direction, and is disposed around the laminar flow fan radially outside the laminar flow fan.
Alternatively, the air duct member is in the shape of an open-bottomed casing having an air duct formed in its side face, and the air duct member is fastened to the bottom of the casing so as to house the heat exchanger and the fan therein.
The suspended ceiling type air conditioner indoor unit is hoisted on a roof, and the side surface of the whole shell is exposed outside, so that a plurality of air outlets can be arranged on the side surface, and multi-directional air supply of two-sided, three-sided, four-sided air outlets, even 360-degree circumferential air supply and the like is realized, and the air supply range is extremely large.
Further, the ceiling type air conditioner indoor unit utilizes the air duct to straighten the air flow of the air outlet and then discharge the straightened air flow to the air outlet, thereby reducing the eddy flow generated at the air outlet, reducing eddy noise and reducing the total noise value. In addition, the air duct is arranged to enable air to be discharged more smoothly, power consumption is reduced, air quantity is increased, and efficiency of an air conditioner air supply system is improved. In addition, a plurality of guide plates can refine and separate the inner space of the air duct into a plurality of air flow channels, so that the guiding effect on the air flow can be enhanced, the wind resistance is reduced, the air flow is uniform, the air outlet is mixed natural wind, and good use experience is brought.
Furthermore, in the ceiling type air conditioner indoor unit, the air speed can be effectively increased by the design that the cross section of the air duct at the inlet is gradually reduced, and the air supply distance is increased. After the speed of the tapered section of the inlet section is increased, the air flow enters the outlet section with the unchanged flow cross section for steady flow, and the direction of the air flow can be further adjusted, so that the air flow is more stable and smooth.
Furthermore, the ceiling type air conditioner indoor unit adopts the laminar flow fan, realizes annular dead-angle-free air outlet based on the laminar flow principle, and is convenient for realizing multi-directional air supply of the indoor unit. In addition, the laminar flow fan utilizes the viscosity of the air boundary layer to do work, the annular disc is basically parallel to the flow direction of the air flow, and the strong vortex generated by impacting the air flow is not disturbed strongly, so that the noise is greatly reduced, the noise quality is excellent, and the user experience is improved.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
Fig. 1 is a schematic structural view of an indoor unit of a ceiling type air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic exploded view of the ceiling type air conditioner indoor unit of FIG. 1;
FIG. 3 is a cross-sectional view of the ceiling type air conditioner indoor unit of FIG. 1 taken along a vertical plane;
FIG. 4 is a schematic view of the top and bottom wall profiles of the duct of FIG. 3;
FIG. 5 is a schematic view of a profile of the two baffles of FIG. 3;
FIG. 6 is a schematic enlarged view of the mount of FIG. 2;
FIG. 7 is a schematic view of a bottom view of a laminar flow fan;
FIG. 8 is a schematic diagram of the air supply principle of a laminar flow fan;
FIG. 9 is a schematic air circulation diagram of the laminar flow fan of the embodiment of FIG. 1;
FIG. 10 is a schematic air circulation diagram of a laminar flow fan according to another embodiment of the present invention;
FIG. 11 is a schematic air circulation diagram of a laminar flow fan according to yet another embodiment of the present invention;
FIG. 12 is a graph showing the relationship between the gradual change of the intervals between the annular disks and the air volume and the air pressure of the laminar fan shown in FIG. 11.
Detailed Description
A ceiling type air conditioner indoor unit according to an embodiment of the present invention will be described with reference to fig. 1 to 12. Where the terms "front", "rear", "upper", "lower", "top", "bottom", "inner", "outer", "transverse", etc., refer to an orientation or positional relationship based on that shown in the drawings, this is merely for convenience in describing the invention and to simplify the description, and does not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
The ceiling-mounted air conditioner indoor unit and the air conditioner outdoor unit (not shown) together form a vapor compression refrigeration cycle system, so that refrigeration/heating of an indoor environment is realized.
Fig. 1 is a schematic view showing a structure of a ceiling type air conditioner indoor unit according to an embodiment of the present invention, fig. 2 is a schematic exploded view of the ceiling type air conditioner indoor unit shown in fig. 1, and fig. 3 is a sectional view of the ceiling type air conditioner indoor unit shown in fig. 1 taken along a vertical plane.
As shown in fig. 1 to 3, the ceiling type air conditioner indoor unit may generally include a housing 100, a heat exchanger 400, a fan 300, an air duct member 180, and a plurality of baffles 910, 920.
The ceiling type air conditioner indoor unit is integrally suspended below an indoor roof, and the top of the casing 100 is used for being connected with the roof. The housing 100 is provided with at least one air inlet 110 and at least one air outlet 120. The air outlet 120 is located at a side of the housing 100. The air inlet 110 may be located on the bottom surface of the housing 100 as shown in fig. 1 to 3, or may be located on the side surface of the housing 100.
The number of the air outlets 120 may be set as desired. For example, if the indoor unit is used to be installed on a roof near a side wall, only one air outlet may be provided. If the installation position of the indoor unit is far away from the side wall, if the indoor unit is arranged at the center of a roof, a plurality of air outlets with different orientations, such as two, three, four and the like, can be arranged so as to realize multi-directional air supply effects of two-sided air outlet, three-sided air outlet, four-sided air outlet and the like. Even, can make the casing be circular, its all-round air outlet of seting up of circumference is used for the air-out to realize 360 all-round air supply.
The heat exchanger 400 is disposed within the housing 100, which may be an evaporator of a vapor compression refrigeration cycle.
The fan 300 is disposed in the casing 100, and is configured to suck indoor air through the air inlet 110, and form heat exchange air (cold air is used as the heat exchange air during cooling and hot air is used as the heat exchange air during heating) after heat exchange with the heat exchanger 400, and blow the heat exchange air back into the room through the air outlet 120, so as to achieve indoor cooling/heating.
An air duct member 180 is provided in the housing 100 and includes at least one air duct 182. The number of air channels 182 is the same as and corresponds to the number of air outlets 120. The air duct 182 functions to guide the heat exchange air to the corresponding air outlet 120. One baffle or a plurality of baffles arranged in the up-down direction are disposed in each air duct 182 for partitioning the inner space of the air duct 182 up and down. Each deflector extends in a horizontal direction, in particular in a direction parallel to the length of the air outlet.
The air duct 182 straightens the air flow and then discharges the straightened air flow to the air outlet 120, thereby reducing the eddy generated at the air outlet 120, reducing the eddy noise and reducing the total noise value. After the flow guiding, the air outlet flow is smoother, the power consumption is reduced, the air quantity is increased, and the efficiency of the air supply system is improved. The air guide plate finely divides the inner space of the air channel into a plurality of air flow channels, so that the guiding effect on the air flow (especially the air flow far away from the wall surface of the air channel in the middle of the air channel) can be enhanced, the wind resistance is reduced, the air flow is uniform, the air outlet is mixed natural wind, and good use experience is brought.
In some embodiments, as shown in fig. 3, the air duct 182 is divided into an inlet section and an outlet section along the flow direction of the air flow, and the flow cross section at the inlet section thereof is tapered along the flow direction of the heat exchange air. I.e., the air flow just enters the air duct 182 and flows outwardly, the air duct 182 becomes narrower. The flow cross section of the air duct 182 at its outlet section remains unchanged in the flow direction of the heat exchange air. I.e., just before the air flow out of the air duct 182, the width of the air duct 182 is not changed. The tapered design of the flow cross section of the inlet section of the air duct 182 can effectively increase the wind speed and increase the air supply distance. After the airflow is accelerated by the tapered section of the inlet section, the airflow enters the outlet section with the unchanged section for steady flow, and the direction of the airflow can be further regulated, so that the airflow is more stable and smooth.
As shown in fig. 3, the number of baffles may be two, an upper baffle 910 and a lower baffle 920, respectively. So as to not only effectively guide the flow, but also avoid the excessively large obstruction to the air flow caused by the arrangement of too many guide plates.
The upper one 910 of the two deflectors 910, 920 defines an air flow channel tapering in the flow direction of the heat exchange air between the deflector 910 and the top wall of the air duct 182. The two deflectors 910, 920 define an air flow channel between them that tapers in the flow direction of the heat exchange air. The baffle 920 at the lower side and the bottom wall of the air duct 182 define an air flow channel tapered in the flow direction of the heat exchange air therebetween. Therefore, the flow guiding effect for increasing the wind speed can be enhanced, and the air flow far away from the top wall/the bottom wall of the air duct can be accelerated.
FIG. 4 is a schematic view of the air duct top and bottom wall profiles of FIG. 3. The shape of the top wall and the bottom wall of the air duct 182 is designed in a refinement manner, so that the molded lines of the air duct can better meet the design purpose, namely, better drainage, steady flow and vortex prevention effects are obtained.
The two walls of the air duct 182 in the width direction are symmetrical with respect to the central vertical plane in the width direction thereof, as shown in fig. 2. Thus, in this embodiment, the change in the area of the flow cross section of the duct is achieved by a change in the profile of the top and bottom walls of the duct.
As shown in fig. 4, the cross section of the air duct 182 at the two points br is the inlet cross section of the air duct 182, and the cross section of the air duct 182 at the two points GJ is the outlet cross section of the air duct 182. BRKF is the inlet section of the air duct 182 and FKJG is the outlet section of the air duct 182.
From the inlet to the outlet (r direction indicated by the arrow) of the air duct 182, the top wall of the air duct 182 is formed of a plurality of sections connected in sequence in a tangential manner. And each section extends in a direction toward the outlet of the air duct 182 while gradually tilting downward. The plurality of segments includes a first arcuate segment BC, a second arcuate segment CD, a first straight segment DE, a third arcuate segment EF, and a second straight segment FG. The centers of the first arc-shaped section BC and the second arc-shaped section CD are located at the inner side of the air duct 182, and the diameter of the second arc-shaped section CD is greater than that of the first arc-shaped section BC. The circle C1 of the broken line in the figure is the circle in which the first arc segment BC is located. The circle C2 is the circle in which the second arc segment CD is located. The center of the third arc segment EF is located outside the air duct 182.
The molded line of the top wall of the air duct is arranged in such a way that the air flow near the top wall slowly enters the BC section, rapidly contracts the section in the DE section to accelerate after passing through the transition of the CD section, and then passes through the steering of the EF section to transition to the gentle FG section to realize steady-flow blowout.
From the inlet to the outlet of the air duct 182, the bottom wall of the air duct 182 sequentially includes a plurality of sections that are tangentially connected, namely a third straight line section RQ, a fourth arc section QP, a fourth straight line section PN, a fifth arc section NM, a sixth arc section ML, a seventh arc section LK and a fifth straight line section KJ. The third straight line segment RQ horizontally extends from the inlet to the outlet of the air duct. The center of the fourth arc segment QP is located inside the air duct 182, and extends gradually upward from the end of the third straight segment RQ. The fourth straight line segment PN extends upward from the top end of the fourth arc segment QP. The center of the fifth arc segment NM is located outside the air duct 182 and extends upward from the top end of the fourth straight line segment PN. The center of the sixth arc-shaped section ML is located at the outer side of the air duct 182, has a smaller diameter than the fifth arc-shaped section NM, and extends upward from the top end of the fifth arc-shaped section NM. The center of the seventh arc-shaped section LK is located at the outer side of the air duct 182 and has a smaller diameter than the sixth arc-shaped section ML, and extends upward from the top end of the sixth arc-shaped section ML and then toward the outlet direction of the air duct 182. The fifth straight line segment KJ extends from the end of the seventh arc segment LK, which may be parallel to FG, toward the outlet of the air duct 182 and gradually slopes downward. The dashed circle C6 is the circle in which the fifth arc segment NM is located, and the dashed circle C5 is the circle in which the sixth arc segment ML is located. The dashed circle C4 is the circle in which the seventh arc-shaped segment LK is located.
The molded line of the bottom wall of the air duct is arranged in such a way that the air flow near the bottom wall slowly enters the RQ section firstly, and enters PN, NM and ML sections after the smooth transition of the QP section, the sections are rapidly contracted to accelerate in the three sections, and then the air flow is transited to the gentle KJ section through the steering of the LK section to realize steady flow blowout.
Fig. 5 is a schematic view of the profile of the two baffles of fig. 3. As shown in fig. 4 and 5, the upper baffle 910 is opposite to the third arc section EF of the top wall of the air duct 182, and is curved, which extends toward the outlet of the air duct 182 while gradually inclining downward and has a downward convex surface, specifically, may be an arc with a center above the baffle 910. The baffle 910 and the top wall of the air duct 182 are shaped to match each other so that they form a tapered air flow path with the top wall of the air duct 182.
The deflector 920 at the lower side is opposite to the seventh arc-shaped section LK of the bottom wall of the air duct 182, and is curved, which extends toward the outlet of the air duct 182 while gradually inclining downward and has an upward convex surface, and may specifically be an arc-shaped with a center of a circle below the deflector 920. The baffle 920 is thus shaped to match the bottom wall of the tunnel 182 so that it forms a tapered airflow path with the bottom wall of the tunnel 182.
The molded lines of the two guide plates can be designed in the following manner so as to be more matched with the top wall/the bottom wall of the air duct, and the guide effect is enhanced. Please refer to fig. 5 in detail.
The included angle a between the tangent line m of the end of the upper deflector 910 far from the air duct outlet and the horizontal plane x1 is 30-60 degrees, such as 30 degrees, 40 degrees, 50 degrees, 60 degrees, and the like, and is preferably 45 degrees. The included angle b between the tangent line n near the end of the air duct outlet and the horizontal plane is less than or equal to 20 degrees, such as 0 degrees, 10 degrees, 20 degrees and the like, and is preferably 0 degrees.
The angle between the tangent line of the end of the deflector 920 at the lower side, which is far from the air channel outlet, and the horizontal plane x3 is 0 °, and the angle between the tangent line p at the end, which is near to the air channel outlet, and the horizontal plane c is less than 20 °, such as 0 °,10 °,20 °, etc., preferably 0 °.
As shown in fig. 2, the air duct member 180 may be in the form of an open-bottomed casing having the aforementioned air duct 182 formed in a side surface thereof. The duct member 180 is fastened to the bottom of the case 100 so as to cover the heat exchanger 400 and the fan 300 therein, so that the heat exchange air can flow only through the duct 182 to the air outlet 120 for smoother blowing.
As shown in fig. 1 and 3, at least one wind deflector 600 for guiding wind direction is provided at each of the wind outlets 120. The wind deflector 600 has a long strip shape with a longitudinal direction parallel to a horizontal direction, and a rotation axis thereof is parallel to the longitudinal direction thereof. When a plurality of air deflectors 600 are provided, the plurality of air deflectors 600 are arranged from top to bottom.
The air deflector 600 may be rotated to open or close the air outlet 120, and also change the air outlet direction of the air outlet 120 by rotating the air deflector 600 to different angles. The air deflector 600 may be driven to rotate by a motor or other structures, and details thereof will not be described.
The number of the air inlets 110 is one, and is disposed at the bottom surface of the housing 100. An alternative construction of the housing 100 is shown in fig. 2, which includes a square bottom case 150 with an open upper side and a square top case 130 with an open lower side, which are fastened together to define a receiving space. The side of the bottom case 150 is provided with the air outlet 120. The number of the air outlets 120 may be three, and one air outlet 120 is provided on each of three sides of the bottom case 150. The bottom surface of the bottom case 150 is provided with an air inlet 110.
The fan 300 may be a laminar flow fan having a rotation axis extending vertically with a bottom opposite the air inlet 110 to draw air from its axial bottom when in operation, and then utilize the viscous effect of the air to generate laminar flow air and blow it radially outwardly into the air duct 182.
The heat exchanger 400 is preferably in a shape of a ring or a half ring (ring, semicircle ring, square ring, irregular ring or U-shaped ring as shown in fig. 2) with its axis extending in the vertical direction, and is disposed around the laminar flow fan at the radial outer side of the laminar flow fan, so that it is not necessary to dispose it above or below the laminar flow fan, which can save the inner space of the ceiling-type air conditioner indoor unit, make the structure thereof more compact, and make the whole machine smaller. And, the heat exchanger 400 surrounds the laminar flow fan, so that the airflow of the laminar flow fan can more rapidly and comprehensively pass through the surface of the heat exchanger 400, and the heat exchange quantity and the heat exchange efficiency of the heat exchanger 400 are greatly improved.
Fig. 7 is a schematic view of a bottom view of a laminar flow fan. As shown in fig. 2, 3 and 7, the laminar flow fan includes a plurality of annular disks 10, a motor 20 and circular disks 30. The plurality of annular disks 10 are arranged in parallel and spaced apart relation and fixedly connected to each other with axes extending vertically and collinear. The circular disk 30 is positioned on top of the laminar fan and is spaced parallel to and indirectly fixedly connected to the uppermost annular disk 10. A plurality of connecting rods 40 may be provided to extend vertically, with one end of the connecting rod 40 being fixed to the circular disc 30, and then extend vertically to penetrate the plurality of annular discs 10 and be fixed to each annular disc 10, to achieve mutual fixation of the plurality of annular discs 10 and the circular disc 30. The center of the circular disk 30 is depressed downward to form a containing chamber 31. The motor 20 is directly or indirectly fixed to the casing 100 and extends into the accommodating cavity 31 to drive the plurality of annular discs 10 to rotate, so that the air boundary layer on the surfaces of the plurality of annular discs 10 is driven by the plurality of annular discs 10 to rotate from inside to outside radially due to the viscosity effect to form laminar wind.
The laminar flow fan is an axial air inlet and radial air outlet structure. Which is axially aspirated and radially discharged to blow exactly the wind horizontally towards each outlet 120. The laminar flow fan is based on the laminar flow principle, and annular dead-angle-free air outlet is realized. In addition, the laminar flow fan uses the viscosity of the air boundary layer to do work, the annular disc 10 is basically parallel to the flowing direction of the air flow, and the air flow is not impacted by strong disturbance to generate strong vortex, so that the noise is greatly reduced, the noise quality is excellent, and the user experience is remarkably improved. The more specific principles and structures of laminar flow fans are described in further detail below.
As shown in fig. 2, a pallet 800 is also fixedly installed in the housing 100. The pallet 800 is mounted to the bottom side of the interior of the housing 100. The heat exchanger 400 is mounted on the pallet 800 to be supported thereby. The periphery of the support plate 800 is in sealing connection with the inner wall of the casing 100, and a vent 801 opposite to the air inlet 110 is formed in the center, so that the air inlet flow is allowed to flow to the bottom of the laminar flow fan through the vent 801. In addition, as shown in fig. 3, the air intake is sucked into the laminar flow fan after passing through the ventilation opening 801, and the air intake does not directly flow to the heat exchanger 400 without the action of the laminar flow fan, so that the heat exchange efficiency is not affected.
Fig. 6 is a schematic enlarged view of the bracket in fig. 2. As shown in fig. 2,3 and 6, the ceiling type air conditioner indoor unit includes a bracket 50. The bracket 50 includes a horizontally disposed ring 51 and a plurality of connecting arms 52 (at least two, such as three shown in fig. 6). The backing ring 51 is hollow and annular. The connecting arms 52 extend upward from the edge of the carrier ring 51 and are removably connected at their upper ends to the air duct member 180, particularly by threaded connection. The motor 20 is placed on the upper side of the carrier ring 51 to be supported by it, and the rotation shaft 21 of the motor 20 protrudes downward from the center of the carrier ring 51. In this way, the supporting ring 51 supports the motor 20 and bears the weight of the entire laminar flow fan.
As shown in fig. 1 to 3, the air inlet 110 is circular, and its central axis is the X-axis. The bottom wall of the housing 100 around the air inlet 110 is a drainage surface 140 extending radially outward from the edge of the air inlet 110 and gradually extending downward, and the drainage surface 140 is a rotation surface coaxial with the air inlet 110. When a plane curve (single curvature, curve plane is not perpendicular to the rotation axis) or a space curve (double curvature) rotates around a fixed straight line (rotation axis), a rotation surface is formed in space.
The air guiding member 200 is disposed at the air inlet 110, and the outer peripheral surface 201 thereof is a rotating surface that gradually expands from top to bottom radially outwards and is coaxial with the air inlet 110, so as to guide indoor air to flow toward the air inlet 110 through a gap between the outer peripheral surface 201 of the air guiding member 200 and the bottom surface of the housing 100.
Compared with the scheme that wind directly vertically enters the housing 100 upwards from the bottom of the housing 100, the embodiment of the invention is provided with the guide piece 200, so that the wind flows from the gap between the guide piece 200 and the bottom of the housing 100 to the air inlet 110, the air inlet direction is close to the horizontal direction, the air more smoothly enters the laminar flow fan (because the annular disc 10 of the laminar flow fan horizontally extends), and the energy consumption and the noise of the laminar flow fan are reduced. In addition, the arrangement of the flow guiding member 200 also makes the appearance of the bottom of the suspended indoor unit (the bottom of the suspended indoor unit mainly faces the user) more attractive, and avoids the influence of complicated air inlet grids arranged at the bottom of the casing 100 on the appearance.
Fig. 8 is a schematic diagram of the air supply principle of a laminar flow fan. As shown in fig. 8, the air supply principle of the laminar flow fan mainly originates from a "tesla turbine" found in nikola tesla. Tesla turbines mainly utilize the "laminar boundary layer effect" or "viscous effect" of a fluid to achieve the objective of doing work on "turbine disks". The annular discs 10 rotate at a high speed, and air in the intervals of the annular discs 10 contacts and moves mutually, so that the air boundary layer 13 close to the surface of each annular disc 10 is driven by the rotating annular disc 10 to rotate from inside to outside to form laminar air due to the action of the viscous shearing force tau.
Fig. 9 is a schematic air circulation diagram of the laminar flow fan of the embodiment shown in fig. 1. As shown in fig. 9, the annular disk 10 is centrally formed with an air inlet passage 11 for allowing outside air to enter. The annular disks 10 are formed with a plurality of air outlet passages 12 in gaps therebetween for laminar air to be blown out. The air boundary layer 13 is rotated from inside to outside to form laminar air, which is centrifugally moved, so that the velocity of the laminar air leaving the air outlet channel 12 is greater than the velocity of the laminar air entering the air inlet channel 11.
Fig. 10 is a schematic view of air circulation of a laminar flow fan according to another embodiment of the present invention. In some embodiments, the inner diameters of the annular disks of the laminar flow fan may be varied. For example, in fig. 10, the inner diameters of the plurality of annular disks 10 are sequentially reduced in the axial air intake direction of the laminar flow fan (from bottom to top in the embodiment shown in fig. 1 to 9). In other words, the inner diameter of the annular disk 10 is gradually reduced in the direction in which the air flow flows in the air intake passage 11. In this way, when air enters the air inlet channel 11 from top to bottom, the airflows at different positions in the radial direction respectively correspond to different annular disks 10, so that the air can more uniformly flow to each annular disk, the situation that the air is difficult to enter the annular disk on the upper side is avoided, and the effect of improving the air quantity is finally achieved.
Fig. 11 is an air circulation schematic diagram of a laminar flow fan according to another embodiment of the present invention, and fig. 12 is a schematic diagram of a relationship between a plurality of annular disc pitches of the laminar flow fan shown in fig. 11 and an air volume and an air pressure.
In other embodiments, the spacing between adjacent annular disks of the laminar flow fan may be varied. As shown in fig. 10, the distance between each adjacent two of the annular disks 10 can be gradually increased in the axial air intake direction of the laminar flow fan. Alternatively, the distance between each adjacent two of the annular disks increases gradually along the direction in which the air flow flows in the air intake passage 11. The inventor discovers through many experiments that the arrangement can effectively improve the air quantity of the laminar flow fan. Referring specifically to fig. 11.
In fig. 12, the abscissa axis SHRINKING UNIFORM EXPANDING PLATE DISTANCE INCREASE indicates the amount of change in the interval between two adjacent annular disks 10 in the bottom-to-top direction, the left ordinate axis Mass flow rate indicates the air volume, the right ordinate axis Pressure indicates the air Pressure, and the air Pressure indicates the Pressure difference at the inlet of the air outlet passage 12 and the air inlet passage 11 of the laminar flow fan. Also, the amount of change in the spacing between adjacent two annular disks 10 is the same, that is, the amount by which the spacing between adjacent two annular disks 10 increases or decreases is the same.
Specifically, fig. 12 shows a schematic diagram of the relationship between the gradual change of the pitch of the plurality of annular disks 10 and the air volume and the air pressure when the outer diameter, the inner diameter, the number, the thickness, and the rotation speed of the motor 20 of the annular disks 10 of the laminar fan are all kept unchanged. When the above-mentioned parameters are kept unchanged, the distance between each two adjacent annular disks 10 among the plurality of annular disks 10 has a large influence on the air volume by gradual change and has a small influence on the air pressure. The foregoing interval gradually increases when the amount of change in the interval between the adjacent two annular disks 10 in the axial air intake direction indicated by the axis of abscissa is positive, and the foregoing interval gradually decreases when the amount of change in the interval between the adjacent two annular disks 10 in the axial air intake direction indicated by the axis of abscissa is negative. The amount of change in the spacing between adjacent two annular disks 10 can be made the same. As can be seen from fig. 12, when the interval variation between each two adjacent annular disks 10 of the plurality of annular disks 10 is-1 mm, 1mm and 2mm, the air volume and air pressure of the laminar flow fan are greatly improved.
Considering the air volume and the air pressure of the laminar flow fan in combination, it is preferable that the interval between each two adjacent annular disks 10 of the plurality of annular disks 10 is set to be gradually increased in the axial air intake direction. For example, the outer diameter of the annular disc 10 is 175mm, the inner diameter of the annular disc 10 is 115mm, the number of the annular discs 10 is 8, the thickness of the annular disc 10 is 2mm, the rotating speed of the motor 20 is 1000rpm (revolutions per minute ), and the air quantity and the air pressure of the laminar flow fan are comprehensively considered at this time, for example, the intervals between two adjacent annular discs 10 in the 8 annular discs 10 can be sequentially set to be 13.75mm, 14.75mm, 15.75mm, 16.75mm, 17.75mm, 18.75mm and 19.75mm along the axial air inlet direction.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.
Claims (9)
1. A ceiling type air conditioner indoor unit, which is characterized by comprising:
The shell is provided with at least one air inlet and at least one air outlet, and the air outlet is positioned on the side surface of the shell;
The heat exchanger is arranged in the shell;
A fan arranged in the shell and used for sucking indoor air through the air inlet to form heat exchange air after heat exchange with the heat exchanger and blowing the heat exchange air back into the room through the air outlet, and
An air duct part arranged in the shell and provided with at least one air duct corresponding to the at least one air outlet one by one for guiding the heat exchange air to each air outlet
A guide plate or a plurality of guide plates arranged along the up-down direction are arranged in each air channel so as to be used for separating the inner space of the air channel up and down;
Two walls of the air duct in the width direction are symmetrical relative to the central vertical surface in the width direction;
From the entry to the export of wind channel, wind channel roof is a plurality of sections of tangent connection in proper order, and every section is all gradually downward sloping when extending towards the export of wind channel, a plurality of sections include:
the center of the first arc-shaped section is positioned at the inner side of the air duct;
the circle center of the second arc-shaped section is positioned at the inner side of the air duct, and the diameter of the second arc-shaped section is larger than that of the first arc-shaped section;
A first straight line segment;
A third arc section with a center outside the air duct and
A second straight line segment.
2. The indoor unit of claim 1, wherein the indoor unit of the ceiling type air conditioner,
The air duct is divided into an inlet section and an outlet section along the flow direction of the heat exchange air, and the flow cross section of the air duct in the inlet section is gradually reduced along the flow direction of the heat exchange air, and the flow cross section of the air duct in the outlet section is kept unchanged along the flow direction of the heat exchange air.
3. The ceiling type air conditioner indoor unit of claim 2, wherein,
The number of the guide plates is two, and
And an airflow channel which is gradually reduced along the flow direction of the heat exchange air is respectively defined between the upper side guide plate and the top wall of the air channel, between the two guide plates and between the lower side guide plate and the bottom wall of the air channel.
4. The indoor unit of claim 1, wherein the indoor unit of the ceiling type air conditioner,
From the entry to the export of wind channel, the diapire of wind channel is including a plurality of sections of tangent connection in proper order, is respectively:
The third straight line section horizontally extends from the inlet to the outlet of the air duct;
The center of the fourth arc-shaped section is positioned at the inner side of the air duct and gradually extends upwards from the tail end of the third straight-line section;
A fourth straight line segment extending upward from the top end of the fourth arc segment;
the center of the fifth arc-shaped section is positioned at the outer side of the air duct and extends upwards from the top end of the fourth straight-line section;
The center of the sixth arc section is positioned at the outer side of the air duct, the diameter of the sixth arc section is smaller than that of the fifth arc section, and the sixth arc section extends upwards from the top end of the fifth arc section;
A seventh arc section with a center located outside the air duct and a diameter smaller than that of the sixth arc section and extending upward from the top end of the sixth arc and then toward the outlet of the air duct, and
And the fifth straight line segment extends from the tail end of the seventh arc segment to the outlet direction of the air duct in a gradually downward inclined mode.
5. The indoor unit of claim 4, wherein the indoor unit of the ceiling type air conditioner,
The upper deflector is opposite to the third arc section of the top wall of the air duct and is in a curved shape which extends towards the outlet of the air duct while gradually inclining downwards and the convex surface is downwards, and
The deflector at the lower side is opposite to the seventh arc section of the bottom wall of the air duct and is in a curved shape which gradually inclines downwards and has an upward convex surface while extending towards the outlet of the air duct.
6. The indoor unit of claim 5, wherein the indoor unit of the ceiling type air conditioner,
The included angle between the tangent line of the end part of the guide plate positioned on the upper side and far away from the air channel outlet and the horizontal plane is 30-60 degrees, and the included angle between the tangent line of the end part of the guide plate close to the air channel outlet and the horizontal plane is less than or equal to 20 degrees;
The included angle between the tangent line of the end part of the guide plate positioned at the lower side and far away from the air channel outlet and the horizontal plane is 0 degrees, and the included angle between the tangent line of the end part of the guide plate positioned near the air channel outlet and the horizontal plane is less than or equal to 20 degrees.
7. The indoor unit of claim 1, wherein the indoor unit of the ceiling type air conditioner,
The number of the air inlets is one, and the air inlets are arranged on the bottom surface of the shell
The fan is a laminar flow fan, the rotation axis of the fan extends vertically, air is sucked from the axial bottom of the fan when the fan is operated, and laminar flow wind is generated by utilizing the viscous effect of the air and is blown out radially outwards.
8. The ceiling type air conditioner indoor unit of claim 7, wherein,
The heat exchanger is in a ring plate shape or a semi-ring plate shape, the axis of which extends in the vertical direction, and is arranged around the laminar flow fan at the radial outer side of the laminar flow fan.
9. The indoor unit of claim 1, wherein the indoor unit of the ceiling type air conditioner,
The air duct component is in a shell shape with an open bottom, and the air duct is formed on the side surface of the air duct component;
the air duct component is fastened to the bottom of the housing to house the heat exchanger and the fan therein.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910045440.1A CN111442368B (en) | 2019-01-17 | 2019-01-17 | Ceiling air conditioner indoor unit |
| PCT/CN2019/103083 WO2020147312A1 (en) | 2019-01-17 | 2019-08-28 | Ceiling mounted indoor unit for air conditioner |
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| CN201910045440.1A CN111442368B (en) | 2019-01-17 | 2019-01-17 | Ceiling air conditioner indoor unit |
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| CN111442368B true CN111442368B (en) | 2025-02-21 |
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| CN201910045440.1A Active CN111442368B (en) | 2019-01-17 | 2019-01-17 | Ceiling air conditioner indoor unit |
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| CN112856011A (en) * | 2020-12-31 | 2021-05-28 | 郑州大学 | Horizontal smoke exhaust device capable of preventing suction penetration |
| CN114963332B (en) * | 2021-02-19 | 2023-05-16 | 青岛海尔空调器有限总公司 | Wall-mounted air conditioner indoor unit |
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| CN210014447U (en) * | 2019-01-17 | 2020-02-04 | 青岛海尔空调器有限总公司 | Ceiling type air conditioner indoor unit |
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| JPH01302045A (en) * | 1988-05-30 | 1989-12-06 | Daikin Ind Ltd | air conditioner |
| JP3136737B2 (en) * | 1992-02-18 | 2001-02-19 | ダイキン工業株式会社 | Multi-plate laminar flow fan |
| JPH06307711A (en) * | 1993-04-21 | 1994-11-01 | Matsushita Refrig Co Ltd | Air-conditioning device |
| JP3482240B2 (en) * | 1993-06-04 | 2003-12-22 | カルソニックカンセイ株式会社 | fan |
| JP3635819B2 (en) * | 1996-10-28 | 2005-04-06 | ダイキン工業株式会社 | Centrifugal fan and air conditioner equipped with this centrifugal fan |
| CN1611851A (en) * | 2003-10-30 | 2005-05-04 | 乐金电子(天津)电器有限公司 | Indoor unit for hang ceiling type air conditioner |
| CN201539922U (en) * | 2009-09-15 | 2010-08-04 | 珠海格力电器股份有限公司 | Ceiling type air conditioner indoor unit |
| US7908879B1 (en) * | 2009-11-03 | 2011-03-22 | Chen Yung-Hua | Multifunctional ceiling air-conditioning circulation machine |
| JP5267690B2 (en) * | 2012-02-03 | 2013-08-21 | ダイキン工業株式会社 | Indoor unit |
| JP5403084B2 (en) * | 2012-02-10 | 2014-01-29 | ダイキン工業株式会社 | Indoor unit |
| CN102878614B (en) * | 2012-08-09 | 2015-06-03 | 青岛海尔空调电子有限公司 | Embedded type indoor unit of air conditioner and with lifting panel and sealed air channels |
| US10352325B2 (en) * | 2012-10-29 | 2019-07-16 | Exhale Fans LLC | Laminar flow radial ceiling fan |
| JP6578907B2 (en) * | 2015-11-27 | 2019-09-25 | 株式会社富士通ゼネラル | Embedded ceiling air conditioner |
| CN105546661B (en) * | 2016-02-19 | 2018-11-06 | 珠海格力电器股份有限公司 | Air conditioner |
| CN106016464A (en) * | 2016-06-30 | 2016-10-12 | 珠海格力电器股份有限公司 | Air duct type indoor unit and air outlet duct structure thereof |
| CN108613259A (en) * | 2018-04-25 | 2018-10-02 | 青岛海尔空调电子有限公司 | A kind of double air outlet clamping air conditioners |
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| CN210014447U (en) * | 2019-01-17 | 2020-02-04 | 青岛海尔空调器有限总公司 | Ceiling type air conditioner indoor unit |
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Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Country or region after: China Patentee after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Country or region before: China Patentee before: QINGDAO HAIER JOINT STOCK Co.,Ltd. |